[SANOG] Weekly Global IPv4 Routing Table Report
Routing Table Analysis Role Account
cscora at apnic.net
Fri Jan 7 18:02:54 UTC 2022
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 08 Jan, 2022
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: 884474
Prefixes after maximum aggregation (per Origin AS): 333130
Deaggregation factor: 2.66
Unique aggregates announced (without unneeded subnets): 424355
Number of IPv4 prefixes with ROAs (including AS0): 255055
Total ASes present in the Internet Routing Table: 72565
Prefixes per ASN: 12.19
Origin-only ASes present in the Internet Routing Table: 62300
Origin ASes announcing only one prefix: 25693
Transit ASes present in the Internet Routing Table: 10265
Transit-only ASes present in the Internet Routing Table: 363
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 55
Max AS path prepend of ASN (265020) 50
Prefixes from unregistered ASNs in the Routing Table: 902
Number of instances of unregistered ASNs: 905
Number of 32-bit ASNs allocated by the RIRs: 38248
Number of 32-bit ASNs visible in the Routing Table: 31780
Prefixes from 32-bit ASNs in the Routing Table: 147662
Number of bogon 32-bit ASNs visible in the Routing Table: 23
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 590
Number of addresses announced to Internet: 3074013952
Equivalent to 183 /8s, 57 /16s and 187 /24s
Percentage of available address space announced: 83.0
Percentage of allocated address space announced: 83.0
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 99.5
Total number of prefixes smaller than registry allocations: 299140
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 232750
Total APNIC prefixes after maximum aggregation: 65401
APNIC Deaggregation factor: 3.56
Prefixes being announced from the APNIC address blocks: 227497
Unique aggregates announced from the APNIC address blocks: 93573
APNIC Region origin ASes present in the Internet Routing Table: 12251
APNIC Prefixes per ASN: 18.57
APNIC Region origin ASes announcing only one prefix: 3502
APNIC Region transit ASes present in the Internet Routing Table: 1700
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 26
Number of APNIC region 32-bit ASNs visible in the Routing Table: 7430
Number of APNIC addresses announced to Internet: 774480256
Equivalent to 46 /8s, 41 /16s and 161 /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: 257190
Total ARIN prefixes after maximum aggregation: 118517
ARIN Deaggregation factor: 2.17
Prefixes being announced from the ARIN address blocks: 257067
Unique aggregates announced from the ARIN address blocks: 122688
ARIN Region origin ASes present in the Internet Routing Table: 18930
ARIN Prefixes per ASN: 13.58
ARIN Region origin ASes announcing only one prefix: 6853
ARIN Region transit ASes present in the Internet Routing Table: 1950
Average ARIN Region AS path length visible: 3.8
Max ARIN Region AS path length visible: 34
Number of ARIN region 32-bit ASNs visible in the Routing Table: 4273
Number of ARIN addresses announced to Internet: 1300450048
Equivalent to 77 /8s, 131 /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: 252391
Total RIPE prefixes after maximum aggregation: 115955
RIPE Deaggregation factor: 2.18
Prefixes being announced from the RIPE address blocks: 248781
Unique aggregates announced from the RIPE address blocks: 148247
RIPE Region origin ASes present in the Internet Routing Table: 28161
RIPE Prefixes per ASN: 8.83
RIPE Region origin ASes announcing only one prefix: 12140
RIPE Region transit ASes present in the Internet Routing Table: 3938
Average RIPE Region AS path length visible: 4.3
Max RIPE Region AS path length visible: 32
Number of RIPE region 32-bit ASNs visible in the Routing Table: 10585
Number of RIPE addresses announced to Internet: 713621120
Equivalent to 42 /8s, 136 /16s and 254 /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: 113776
Total LACNIC prefixes after maximum aggregation: 27286
LACNIC Deaggregation factor: 4.17
Prefixes being announced from the LACNIC address blocks: 114555
Unique aggregates announced from the LACNIC address blocks: 47821
LACNIC Region origin ASes present in the Internet Routing Table: 10895
LACNIC Prefixes per ASN: 10.51
LACNIC Region origin ASes announcing only one prefix: 2654
LACNIC Region transit ASes present in the Internet Routing Table: 2190
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: 8576
Number of LACNIC addresses announced to Internet: 176497408
Equivalent to 10 /8s, 133 /16s and 35 /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: 27465
Total AfriNIC prefixes after maximum aggregation: 5295
AfriNIC Deaggregation factor: 5.19
Prefixes being announced from the AfriNIC address blocks: 35984
Unique aggregates announced from the AfriNIC address blocks: 11499
AfriNIC Region origin ASes present in the Internet Routing Table: 1582
AfriNIC Prefixes per ASN: 22.75
AfriNIC Region origin ASes announcing only one prefix: 544
AfriNIC Region transit ASes present in the Internet Routing Table: 311
Average AfriNIC Region AS path length visible: 5.1
Max AfriNIC Region AS path length visible: 34
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 916
Number of AfriNIC addresses announced to Internet: 108585216
Equivalent to 6 /8s, 120 /16s and 225 /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 8744 8919 50 CHINAMOBILE-CN China Mobile Communicati
7545 5842 787 680 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4695 4192 74 ERX-CERNET-BKB China Education and Rese
7552 3610 1330 20 VIETEL-AS-AP Viettel Group, VN
7713 3483 1038 51 TELKOMNET-AS-AP PT Telekomunikasi Indon
45899 3406 1880 58 VNPT-AS-VN VNPT Corp, VN
4766 2518 11120 602 KIXS-AS-KR Korea Telecom, KR
9498 2220 474 231 BBIL-AP BHARTI Airtel Ltd., IN
45090 2163 1438 79 TENCENT-NET-AP Shenzhen Tencent Compute
4755 2121 429 203 TATACOMM-AS TATA Communications formerl
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 6043 10126 2590 AMAZON-02, US
11492 4563 302 815 CABLEONE, US
22773 4029 3031 381 ASN-CXA-ALL-CCI-22773-RDC, US
7155 3951 264 30 VIASAT-SP-BACKBONE, US
16625 3679 1897 2573 AKAMAI-AS, US
6327 3367 1319 65 SHAW, CA
749 2890 50784 2146 DNIC-AS-00749, US
30036 2607 374 127 MEDIACOM-ENTERPRISE-BUSINESS, US
209 2510 5042 429 CENTURYLINK-US-LEGACY-QWEST, US
20115 2247 3035 507 CHARTER-20115, 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 6820 1734 151 UNI2-AS, ES
9121 6716 1692 17 TTNET, TR
20940 3886 3348 210 AKAMAI-ASN1, NL
8551 3456 378 39 BEZEQ-INTERNATIONAL-AS Bezeqint Interne
39891 3271 187 23 ALJAWWALSTC-AS, SA
12389 2950 2284 902 ROSTELECOM-AS, RU
9009 2497 256 1313 M247, GB
34984 2215 357 602 TELLCOM-AS, TR
47331 1963 313 1497 TTNET, TR
58224 1777 924 577 TCI, IR
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 10614 3452 581 Uninet S.A. de C.V., MX
10620 3259 490 840 Telmex Colombia S.A., CO
11830 2464 369 62 Instituto Costarricense de Electricidad
13999 1637 283 461 Mega Cable, S.A. de C.V., MX
6503 1439 354 524 Axtel, S.A.B. de C.V., MX
28573 1405 2326 253 CLARO S.A., BR
3816 1245 658 146 COLOMBIA TELECOMUNICACIONES S.A. ESP, C
26615 1146 2350 138 TIM SA, BR
6147 1092 369 21 Telefonica del Peru S.A.A., PE
11664 994 191 443 Techtel LMDS Comunicaciones Interactiva
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
24863 1630 393 21 LINKdotNET-AS, EG
24835 1548 499 32 RAYA-AS, EG
36992 1299 1518 262 ETISALAT-MISR, EG
36903 1195 543 114 MT-MPLS, MA
29571 869 68 12 ORANGE-COTE-IVOIRE, CI
36935 687 521 39 Vodafone-, EG
6713 612 1863 34 IAM-AS, MA
15399 518 50 33 WANANCHI-, KE
37342 470 32 1 MOVITEL, MZ
23889 428 232 16 MauritiusTelecom, MU
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 10614 3452 581 Uninet S.A. de C.V., MX
9808 8744 8919 50 CHINAMOBILE-CN China Mobile Communicati
12479 6820 1734 151 UNI2-AS, ES
9121 6716 1692 17 TTNET, TR
16509 6043 10126 2590 AMAZON-02, US
7545 5842 787 680 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4695 4192 74 ERX-CERNET-BKB China Education and Rese
11492 4563 302 815 CABLEONE, US
22773 4029 3031 381 ASN-CXA-ALL-CCI-22773-RDC, US
7155 3951 264 30 VIASAT-SP-BACKBONE, US
Complete listing at https://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
9808 8744 8694 CHINAMOBILE-CN China Mobile Communications Grou
9121 6716 6699 TTNET, TR
12479 6820 6669 UNI2-AS, ES
7545 5842 5162 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4695 4621 ERX-CERNET-BKB China Education and Research Net
7155 3951 3921 VIASAT-SP-BACKBONE, US
11492 4563 3748 CABLEONE, US
20940 3886 3676 AKAMAI-ASN1, NL
22773 4029 3648 ASN-CXA-ALL-CCI-22773-RDC, US
7552 3610 3590 VIETEL-AS-AP Viettel Group, VN
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
46990 UNALLOCATED 8.5.242.0/23 3356 LEVEL3, US
62828 UNALLOCATED 8.21.130.0/24 3356 LEVEL3, US
393266 UNALLOCATED 8.23.52.0/24 46887 LIGHTOWER, US
18604 UNALLOCATED 8.25.204.0/24 3356 LEVEL3, US
394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US
54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US
1782 UNALLOCATED 8.42.19.0/24 46887 LIGHTOWER, US
395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US
395056 UNALLOCATED 8.45.133.0/24 3356 LEVEL3, US
32306 UNALLOCATED 8.46.80.0/24 33652 CMCS, 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
23.141.0.0/24 Origin: 395350 UNASSIGNED
23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US
23.146.243.0/24 Origin: 46664 VDI-NETWORK, US
23.146.243.0/24 Transit: 1299 TWELVE99 Twelve99, Telia Carrier, SE
23.252.160.0/24 Origin: 398968 GROUP-IID-01, US
23.252.160.0/24 Transit: 1299 TWELVE99 Twelve99, Telia Carrier, SE
23.252.161.0/24 Origin: 398968 GROUP-IID-01, US
23.252.161.0/24 Transit: 1299 TWELVE99 Twelve99, Telia Carrier, SE
23.252.162.0/24 Origin: 398968 GROUP-IID-01, US
23.252.162.0/24 Transit: 1299 TWELVE99 Twelve99, Telia Carrier, SE
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 /10:41 /11:102 /12:305
/13:594 /14:1212 /15:2037 /16:13562 /17:8326 /18:13930
/19:25216 /20:43181 /21:51902 /22:108276 /23:95075 /24:519893
/25:793 /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
9121 5893 6716 TTNET, TR
12479 5765 6820 UNI2-AS, ES
8151 4433 10614 Uninet S.A. de C.V., MX
11492 3516 4563 CABLEONE, US
6327 3175 3367 SHAW, CA
7155 3041 3951 VIASAT-SP-BACKBONE, US
22773 3004 4029 ASN-CXA-ALL-CCI-22773-RDC, US
8551 2921 3456 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
39891 2807 3271 ALJAWWALSTC-AS, SA
30036 2262 2607 MEDIACOM-ENTERPRISE-BUSINESS, US
Complete listing at https://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1902 2:988 3:151 4:7 5:3689 6:102
7:5 8:1565 9:1 11:172 12:1705 13:406
14:2338 15:141 16:36 17:374 18:129 20:143
21:4 22:188 23:5387 24:2374 25:4 27:2577
29:19 31:2408 32:106 34:1 35:49 36:1730
37:3915 38:2461 39:727 40:149 41:3906 42:1069
43:2099 44:294 45:16015 46:3874 47:302 49:1636
50:1900 51:105 52:1344 54:290 55:733 56:7
57:56 58:1768 59:1140 60:950 61:2254 62:2420
63:1940 64:5391 65:2323 66:4928 67:2932 68:1184
69:4170 70:1338 71:677 72:3061 74:2620 75:1515
76:717 77:2157 78:3805 79:2811 80:1904 81:1652
82:1431 83:1192 84:1317 85:3576 86:694 87:1883
88:2621 89:3126 90:490 91:7518 92:1889 93:2589
94:3265 95:4511 96:1302 97:344 98:988 99:862
100:75 101:1046 102:1875 103:27874 104:4083 105:460
106:841 107:2413 108:746 109:3906 110:2054 111:3185
112:1961 113:1525 114:1533 115:1945 116:1883 117:2502
118:2308 119:1850 120:1659 121:1019 122:2528 123:2118
124:1611 125:2055 128:1363 129:1147 130:913 131:2076
132:749 133:367 134:1927 135:287 136:841 137:853
138:2465 139:1218 140:840 141:1334 142:1235 143:1422
144:1229 145:335 146:1755 147:1468 148:2209 149:1676
150:864 151:1081 152:1783 153:446 154:3635 155:1361
156:1849 157:1211 158:998 159:2000 160:2365 161:1275
162:3427 163:1190 164:1659 165:1528 166:618 167:1680
168:3683 169:684 170:4317 171:822 172:2930 173:3047
174:1009 175:1125 176:3452 177:4571 178:3023 179:1994
180:2288 181:2748 182:3210 183:1921 184:2411 185:19184
186:4263 187:3529 188:3790 189:3150 190:8853 191:1314
192:10983 193:8488 194:6947 195:4986 196:2912 197:2392
198:5990 199:5984 200:7455 201:5700 202:10456 203:10027
204:4510 205:3396 206:3848 207:3362 208:3998 209:4599
210:4230 211:2450 212:3912 213:3374 214:1155 215:64
216:6407 217:2630 218:1224 219:606 220:1960 221:982
222:859 223:2117
End of report
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