[menog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Jan 27 18:03:23 UTC 2023


This is an automated weekly mailing describing the state of the Global
IPv4 Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.

Daily listings are sent to bgp-stats at lists.apnic.net.

For historical data, please see https://thyme.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.

IPv4 Routing Table Report   04:00 +10GMT Sat 28 Jan, 2023

  BGP Table (Global) as seen in Japan.

Report Website:     https://thyme.apnic.net
Detailed Analysis:  https://thyme.apnic.net/current/

Analysis Summary
----------------

BGP routing table entries examined:                              919562
    Prefixes after maximum aggregation (per Origin AS):          347630
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      445281
Total ASes present in the Internet Routing Table:                 74145
    Prefixes per ASN:                                             12.40
Origin-only ASes present in the Internet Routing Table:           63629
Origin ASes announcing only one prefix:                           26181
Transit ASes present in the Internet Routing Table:               10516
Transit-only ASes present in the Internet Routing Table:            438
Average AS path length visible in the Internet Routing Table:       4.2
    Max AS path length visible:                                      55
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:               956
    Number of instances of unregistered ASNs:                       965
Number of 32-bit ASNs allocated by the RIRs:                      41137
Number of 32-bit ASNs visible in the Routing Table:               34125
Prefixes from 32-bit ASNs in the Routing Table:                  166499
Number of bogon 32-bit ASNs visible in the Routing Table:            30
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            521
Number of addresses announced to Internet:                   3063468416
    Equivalent to 182 /8s, 152 /16s and 209 /24s
    Percentage of available address space announced:               82.7
    Percentage of allocated address space announced:               82.7
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.6
Total number of prefixes smaller than registry allocations:      312048

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                   240628
    Total APNIC prefixes after maximum aggregation:               68753
    APNIC Deaggregation factor:                                    3.50
Prefixes being announced from the APNIC address blocks:          235655
    Unique aggregates announced from the APNIC address blocks:    97714
APNIC Region origin ASes present in the Internet Routing Table:   13286
    APNIC Prefixes per ASN:                                       17.74
APNIC Region origin ASes announcing only one prefix:               3873
APNIC Region transit ASes present in the Internet Routing Table:   1786
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         27
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8549
Number of APNIC addresses announced to Internet:              773811200
    Equivalent to 46 /8s, 31 /16s and 108 /24s
APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 63488-64098, 64297-64395, 131072-151865
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
                       116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
                       123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
                       163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
                       203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
                       222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    267148
    Total ARIN prefixes after maximum aggregation:               121418
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           269042
    Unique aggregates announced from the ARIN address blocks:    129860
ARIN Region origin ASes present in the Internet Routing Table:    19077
    ARIN Prefixes per ASN:                                        14.10
ARIN Region origin ASes announcing only one prefix:                6989
ARIN Region transit ASes present in the Internet Routing Table:    1961
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          35
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4738
Number of ARIN addresses announced to Internet:              1286425344
    Equivalent to 76 /8s, 173 /16s and 75 /24s
ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations)  2138-2584, 2615-2772, 2823-2829, 2880-3153
                       3354-4607, 4865-5119, 5632-6655, 6912-7466
                       7723-8191, 10240-12287, 13312-15359, 16384-17407
                       18432-20479, 21504-23551, 25600-26591,
                       26624-27647, 29696-30719, 31744-33791
                       35840-36863, 39936-40959, 46080-47103
                       53248-55295, 62464-63487, 64198-64296, 393216-401308
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  23/8,  24/8,  26/8,  28/8,
                        29/8,  30/8,  32/8,  33/8,  34/8,  35/8,  38/8,
                        40/8,  44/8,  47/8,  48/8,  50/8,  52/8,  53/8,
                        54/8,  55/8,  56/8,  57/8,  63/8,  64/8,  65/8,
                        66/8,  67/8,  68/8,  69/8,  70/8,  71/8,  72/8,
                        73/8,  74/8,  75/8,  76/8,  96/8,  97/8,  98/8,
                        99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8,
                       130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8,
                       138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8,
                       147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8,
                       158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8,
                       166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8,
                       174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8,
                       206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
                      

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                    264423
    Total RIPE prefixes after maximum aggregation:               122536
    RIPE Deaggregation factor:                                     2.16
Prefixes being announced from the RIPE address blocks:           260803
    Unique aggregates announced from the RIPE address blocks:    156156
RIPE Region origin ASes present in the Internet Routing Table:    28236
    RIPE Prefixes per ASN:                                         9.24
RIPE Region origin ASes announcing only one prefix:               12047
RIPE Region transit ASes present in the Internet Routing Table:    3960
Average RIPE Region AS path length visible:                         4.2
    Max RIPE Region AS path length visible:                          38
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10996
Number of RIPE addresses announced to Internet:               718605440
    Equivalent to 42 /8s, 213 /16s and 12 /24s
RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
                       40960-45055, 47104-52223, 56320-58367
                       59392-61439, 61952-62463, 64396-64495
                       196608-213403
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
                        62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
                        83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
                        90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 109/8,
                       141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
                       193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                  117583
    Total LACNIC prefixes after maximum aggregation:              28461
    LACNIC Deaggregation factor:                                   4.13
Prefixes being announced from the LACNIC address blocks:         116755
    Unique aggregates announced from the LACNIC address blocks:   49073
LACNIC Region origin ASes present in the Internet Routing Table:  11011
    LACNIC Prefixes per ASN:                                      10.60
LACNIC Region origin ASes announcing only one prefix:              2673
LACNIC Region transit ASes present in the Internet Routing Table:  2276
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8779
Number of LACNIC addresses announced to Internet:             176249344
    Equivalent to 10 /8s, 129 /16s and 90 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-273820 + ERX transfers
LACNIC Address Blocks  177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
                       191/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                  28824
    Total AfriNIC prefixes after maximum aggregation:              5722
    AfriNIC Deaggregation factor:                                  5.04
Prefixes being announced from the AfriNIC address blocks:         36786
    Unique aggregates announced from the AfriNIC address blocks:  12054
AfriNIC Region origin ASes present in the Internet Routing Table:  1719
    AfriNIC Prefixes per ASN:                                     21.40
AfriNIC Region origin ASes announcing only one prefix:              599
AfriNIC Region transit ASes present in the Internet Routing Table:  329
Average AfriNIC Region AS path length visible:                      5.0
    Max AfriNIC Region AS path length visible:                       31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1063
Number of AfriNIC addresses announced to Internet:            108057088
    Equivalent to 6 /8s, 112 /16s and 210 /24s
AfriNIC AS Blocks      36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks  41/8,  45/8, 102/8, 105/8, 154/8, 196/8, 197/8,
                      

APNIC Region per AS prefix count summary
----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  9808        9446       8884      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5921        787     703  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4863       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3632       1331      21  VIETEL-AS-AP Viettel Group, VN
  7713        3505       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3378       1874      96  VNPT-AS-VN VNPT Corp, VN
  9498        2713        499     238  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2531      11251     593  KIXS-AS-KR Korea Telecom, KR
 24560        2362        848     437  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
 45090        2183       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute

Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        7847      10711    2895  AMAZON-02, US
 11492        4531        300     601  CABLEONE, US
  7155        3895        265      33  VIASAT-SP-BACKBONE, US
 22773        3694       3066     323  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3500       1320      63  SHAW, CA
 16625        3462       1778    2507  AKAMAI-AS, US
   749        3023      50575    2290  DNIC-AS-00749, US
396982        2589       3496     365  GOOGLE-CLOUD-PLATFORM, US
  7018        2584      24127    1566  ATT-INTERNET4, US
 30036        2556        366     395  MEDIACOM-ENTERPRISE-BUSINESS, US

Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 12479        6975       1706     146  UNI2-AS, ES
  9121        6115       1692      17  TTNET, TR
 39891        4561        269      58  ALJAWWALSTC-AS, SA
 20940        4047       3399     177  AKAMAI-ASN1, NL
  8551        3904        374      38  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2941       2290     908  ROSTELECOM-AS, RU
 47331        2787        410    2095  TTNET, TR
  9009        2702        256    1370  M247, RO
 34984        2259        358     610  TELLCOM-AS, TR
  6849        2196        339      19  UKRTELNET, UA

Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       11074       3342     584  Uninet S.A. de C.V., MX
 10620        3474        507     856  Telmex Colombia S.A., CO
 11830        2247        369      64  Instituto Costarricense de Electricidad
 13999        2228        367     594  Mega Cable, S.A. de C.V., MX
 28573        1353       2329     257  Claro NXT Telecomunicacoes Ltda, BR
  6503        1297        339     517  Axtel, S.A.B. de C.V., MX
  3816        1290        742     155  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1149        369      22  Telefonica del Peru S.A.A., PE
 11664        1128        186     460  Techtel LMDS Comunicaciones Interactiva
 26615        1017       2466      43  TIM SA, BR

Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 24835        1538        533      30  RAYA-AS, EG
 24863        1502        393      21  LINKdotNET-AS, EG
 36992        1337       1517     277  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1009         67      47  ORANGE-COTE-IVOIRE, CI
 36935         884        520      42  Vodafone-, EG
  6713         612       1861      34  IAM-AS, MA
 15399         526         54      46  WANANCHI-, KE
 37342         494         32       1  MOVITEL, MZ
 24757         492         73       5  EthioNet-AS, ET

Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       11074       3342     584  Uninet S.A. de C.V., MX
  9808        9446       8884      50  CHINAMOBILE-CN China Mobile Communicati
 16509        7847      10711    2895  AMAZON-02, US
 12479        6975       1706     146  UNI2-AS, ES
  9121        6115       1692      17  TTNET, TR
  7545        5921        787     703  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4863       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4561        269      58  ALJAWWALSTC-AS, SA
 11492        4531        300     601  CABLEONE, US
 20940        4047       3399     177  AKAMAI-ASN1, NL

Complete listing at https://thyme.apnic.net/current/data-ASnet

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  9808        9446         9396  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6975         6829  UNI2-AS, ES
  9121        6115         6098  TTNET, TR
  7545        5921         5218  TPG-INTERNET-AP TPG Telecom Limited, AU
 16509        7847         4952  AMAZON-02, US
  4538        4863         4788  ERX-CERNET-BKB China Education and Research Net
 39891        4561         4503  ALJAWWALSTC-AS, SA
 11492        4531         3930  CABLEONE, US
 20940        4047         3870  AKAMAI-ASN1, NL
  8551        3904         3866  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo

Complete listing at https://thyme.apnic.net/current/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     16641  UNALLOCATED  8.10.194.0/24             3356  LEVEL3, US
     16641  UNALLOCATED  8.10.210.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.12.76.0/24              3356  LEVEL3, US
     16641  UNALLOCATED  8.12.250.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.14.115.0/24             3356  LEVEL3, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     25674  UNALLOCATED  8.19.146.0/24             3356  LEVEL3, US
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, US

Complete listing at https://thyme.apnic.net/current/data-badAS

Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             6939  HURRICANE, US

Complete listing at https://thyme.apnic.net/current/data-spar

Advertised Unallocated Addresses
--------------------------------

Unassigned Network     ASN Information  AS Name
23.131.185.0/24      Origin:       174  COGENT-174, US
23.131.185.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.186.0/24      Origin:       174  COGENT-174, US
23.131.186.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.187.0/24      Origin:       174  COGENT-174, US
23.131.187.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.188.0/24      Origin:       174  COGENT-174, US
23.131.188.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.136.112.0/24      Origin:     54835  UNASSIGNED
23.136.112.0/24     Transit:     21559  OSNET, PR

Complete listing at https://thyme.apnic.net/current/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:16       /9:13      /10:39      /11:101     /12:295     
/13:580     /14:1199    /15:2041    /16:13488   /17:8316    /18:13943   
/19:25209   /20:44346   /21:52333   /22:110215  /23:98394   /24:548215  
/25:819     /26:0       /27:0       /28:0       /29:0       /30:0       
/31:0       /32:0       

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

   ASN  No of nets  Total ann.  Description
 12479        6043        6975  UNI2-AS, ES
  9121        5294        6115  TTNET, TR
  8151        5084       11074  Uninet S.A. de C.V., MX
 39891        3552        4561  ALJAWWALSTC-AS, SA
 11492        3446        4531  CABLEONE, US
  8551        3369        3904  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3308        3500  SHAW, CA
  7155        2984        3895  VIASAT-SP-BACKBONE, US
 22773        2725        3694  ASN-CXA-ALL-CCI-22773-RDC, US
 47331        2408        2787  TTNET, TR

Complete listing at https://thyme.apnic.net/current/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:1641      2:1232      3:168       4:5         5:4113      6:113    
   7:5         8:1561      9:1        11:172      12:1575     13:376    
  14:2361     15:289      16:79       17:370      18:388      20:243    
  21:4        22:188      23:6068     24:2497     25:4        27:2647   
  29:19       31:2492     32:101      34:9        35:106      36:1877   
  37:4586     38:4053     39:833      40:154      41:3953     42:1057   
  43:2322     44:302      45:16408    46:4184     47:382      49:1750   
  50:1840     51:380      52:1551     54:395      55:859      56:8      
  57:79       58:1745     59:1165     60:1004     61:2428     62:2620   
  63:1940     64:5663     65:2322     66:4905     67:3046     68:1340   
  69:4147     70:1254     71:660      72:2970     74:2594     75:1457   
  76:601      77:2391     78:3947     79:3176     80:2066     81:1843   
  82:1483     83:1235     84:1511     85:3747     86:749      87:1948   
  88:2881     89:3561     90:597      91:7644     92:2001     93:2582   
  94:3510     95:4863     96:1328     97:347      98:1159     99:739    
 100:75      101:1062    102:2531    103:30898   104:4538    105:482    
 106:848     107:2512    108:921     109:4390    110:2092    111:3341   
 112:2046    113:1544    114:1616    115:2040    116:1902    117:2562   
 118:2288    119:1911    120:1768    121:1113    122:2594    123:2155   
 124:1604    125:2353    128:1303    129:1062    130:980     131:1985   
 132:802     133:406     134:1912    135:298     136:869     137:930    
 138:2559    139:1548    140:1140    141:1482    142:1425    143:1489   
 144:1194    145:347     146:1872    147:1562    148:2297    149:1891   
 150:863     151:1138    152:1828    153:479     154:3968    155:1406   
 156:1661    157:1294    158:1031    159:2262    160:2555    161:1465   
 162:3526    163:1485    164:1615    165:1655    166:838     167:1736   
 168:3880    169:918     170:4589    171:878     172:3498    173:2953   
 174:1024    175:1159    176:3698    177:4650    178:3552    179:2152   
 180:2375    181:3383    182:3279    183:1936    184:2343    185:19968  
 186:4671    187:3911    188:4108    189:3504    190:9097    191:1429   
 192:10953   193:8828    194:7221    195:5113    196:3008    197:2405   
 198:5960    199:6098    200:7762    201:5857    202:10653   203:10036  
 204:4604    205:3487    206:3876    207:3425    208:4078    209:4826   
 210:4434    211:2503    212:4101    213:3558    214:1092    215:56     
 216:6621    217:2636    218:1279    219:567     220:2032    221:969    
 222:845     223:2064   

End of report


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