[SANOG] Weekly Global IPv4 Routing Table Report
Routing Table Analysis Role Account
cscora at apnic.net
Fri Jan 14 18:03:01 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 15 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: 885121
Prefixes after maximum aggregation (per Origin AS): 333219
Deaggregation factor: 2.66
Unique aggregates announced (without unneeded subnets): 425456
Total ASes present in the Internet Routing Table: 72620
Prefixes per ASN: 12.19
Origin-only ASes present in the Internet Routing Table: 62321
Origin ASes announcing only one prefix: 25693
Transit ASes present in the Internet Routing Table: 10299
Transit-only ASes present in the Internet Routing Table: 377
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 53
Max AS path prepend of ASN (265020) 50
Prefixes from unregistered ASNs in the Routing Table: 910
Number of instances of unregistered ASNs: 914
Number of 32-bit ASNs allocated by the RIRs: 38307
Number of 32-bit ASNs visible in the Routing Table: 31840
Prefixes from 32-bit ASNs in the Routing Table: 148041
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: 568
Number of addresses announced to Internet: 3074313728
Equivalent to 183 /8s, 62 /16s and 78 /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: 299471
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 232790
Total APNIC prefixes after maximum aggregation: 65474
APNIC Deaggregation factor: 3.56
Prefixes being announced from the APNIC address blocks: 227581
Unique aggregates announced from the APNIC address blocks: 93678
APNIC Region origin ASes present in the Internet Routing Table: 12263
APNIC Prefixes per ASN: 18.56
APNIC Region origin ASes announcing only one prefix: 3490
APNIC Region transit ASes present in the Internet Routing Table: 1704
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: 7446
Number of APNIC addresses announced to Internet: 774476672
Equivalent to 46 /8s, 41 /16s and 147 /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: 257494
Total ARIN prefixes after maximum aggregation: 118531
ARIN Deaggregation factor: 2.17
Prefixes being announced from the ARIN address blocks: 257375
Unique aggregates announced from the ARIN address blocks: 122888
ARIN Region origin ASes present in the Internet Routing Table: 18930
ARIN Prefixes per ASN: 13.60
ARIN Region origin ASes announcing only one prefix: 6862
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: 4286
Number of ARIN addresses announced to Internet: 1300451328
Equivalent to 77 /8s, 131 /16s and 80 /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: 252847
Total RIPE prefixes after maximum aggregation: 116069
RIPE Deaggregation factor: 2.18
Prefixes being announced from the RIPE address blocks: 249215
Unique aggregates announced from the RIPE address blocks: 148413
RIPE Region origin ASes present in the Internet Routing Table: 28168
RIPE Prefixes per ASN: 8.85
RIPE Region origin ASes announcing only one prefix: 12135
RIPE Region transit ASes present in the Internet Routing Table: 3969
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: 10598
Number of RIPE addresses announced to Internet: 713844352
Equivalent to 42 /8s, 140 /16s and 102 /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: 113593
Total LACNIC prefixes after maximum aggregation: 27175
LACNIC Deaggregation factor: 4.18
Prefixes being announced from the LACNIC address blocks: 114409
Unique aggregates announced from the LACNIC address blocks: 48485
LACNIC Region origin ASes present in the Internet Routing Table: 10909
LACNIC Prefixes per ASN: 10.49
LACNIC Region origin ASes announcing only one prefix: 2661
LACNIC Region transit ASes present in the Internet Routing Table: 2197
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 53
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 8591
Number of LACNIC addresses announced to Internet: 176636672
Equivalent to 10 /8s, 135 /16s and 67 /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: 27487
Total AfriNIC prefixes after maximum aggregation: 5281
AfriNIC Deaggregation factor: 5.20
Prefixes being announced from the AfriNIC address blocks: 35973
Unique aggregates announced from the AfriNIC address blocks: 11486
AfriNIC Region origin ASes present in the Internet Routing Table: 1582
AfriNIC Prefixes per ASN: 22.74
AfriNIC Region origin ASes announcing only one prefix: 545
AfriNIC Region transit ASes present in the Internet Routing Table: 308
Average AfriNIC Region AS path length visible: 5.1
Max AfriNIC Region AS path length visible: 42
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 919
Number of AfriNIC addresses announced to Internet: 108532480
Equivalent to 6 /8s, 120 /16s and 19 /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 8726 8919 50 CHINAMOBILE-CN China Mobile Communicati
7545 5842 787 680 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4689 4192 74 ERX-CERNET-BKB China Education and Rese
7552 3611 1330 20 VIETEL-AS-AP Viettel Group, VN
7713 3492 1038 51 TELKOMNET-AS-AP PT Telekomunikasi Indon
45899 3426 1880 57 VNPT-AS-VN VNPT Corp, VN
4766 2517 11120 602 KIXS-AS-KR Korea Telecom, KR
9498 2228 474 231 BBIL-AP BHARTI Airtel Ltd., IN
45090 2163 1438 79 TENCENT-NET-AP Shenzhen Tencent Compute
4755 2118 429 199 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 6090 10131 2623 AMAZON-02, US
11492 4597 304 768 CABLEONE, US
22773 4022 3030 376 ASN-CXA-ALL-CCI-22773-RDC, US
7155 3951 264 30 VIASAT-SP-BACKBONE, US
16625 3672 1894 2566 AKAMAI-AS, US
6327 3348 1318 63 SHAW, CA
749 2889 50784 2145 DNIC-AS-00749, US
30036 2608 374 127 MEDIACOM-ENTERPRISE-BUSINESS, US
209 2512 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 6829 1730 150 UNI2-AS, ES
9121 6718 1692 17 TTNET, TR
20940 3877 3348 210 AKAMAI-ASN1, NL
8551 3776 378 39 BEZEQ-INTERNATIONAL-AS Bezeqint Interne
39891 3271 187 23 ALJAWWALSTC-AS, SA
12389 2951 2286 903 ROSTELECOM-AS, RU
9009 2478 253 1295 M247, GB
34984 2216 357 602 TELLCOM-AS, TR
47331 1963 314 1495 TTNET, TR
58224 1777 925 589 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 10222 3463 575 Uninet S.A. de C.V., MX
10620 3442 519 715 Telmex Colombia S.A., CO
11830 2464 369 62 Instituto Costarricense de Electricidad
13999 1641 283 463 Mega Cable, S.A. de C.V., MX
6503 1440 354 524 Axtel, S.A.B. de C.V., MX
28573 1393 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 1640 393 21 LINKdotNET-AS, EG
24835 1547 515 32 RAYA-AS, EG
36992 1299 1518 262 ETISALAT-MISR, EG
36903 1195 543 114 MT-MPLS, MA
29571 871 68 12 ORANGE-COTE-IVOIRE, CI
36935 734 521 39 Vodafone-, EG
6713 612 1863 34 IAM-AS, MA
15399 519 50 33 WANANCHI-, KE
37342 468 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 10222 3463 575 Uninet S.A. de C.V., MX
9808 8726 8919 50 CHINAMOBILE-CN China Mobile Communicati
12479 6829 1730 150 UNI2-AS, ES
9121 6718 1692 17 TTNET, TR
16509 6090 10131 2623 AMAZON-02, US
7545 5842 787 680 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4689 4192 74 ERX-CERNET-BKB China Education and Rese
11492 4597 304 768 CABLEONE, US
22773 4022 3030 376 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 8726 8676 CHINAMOBILE-CN China Mobile Communications Grou
9121 6718 6701 TTNET, TR
12479 6829 6679 UNI2-AS, ES
7545 5842 5162 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4689 4615 ERX-CERNET-BKB China Education and Research Net
7155 3951 3921 VIASAT-SP-BACKBONE, US
11492 4597 3829 CABLEONE, US
8551 3776 3737 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
20940 3877 3667 AKAMAI-ASN1, NL
22773 4022 3646 ASN-CXA-ALL-CCI-22773-RDC, US
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
32848 UNALLOCATED 8.28.72.0/24 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
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
23.252.160.0/24 Origin: 398968 GROUP-IID-01, US
23.252.160.0/24 Transit: 174 COGENT-174, US
23.252.161.0/24 Origin: 398968 GROUP-IID-01, US
23.252.161.0/24 Transit: 174 COGENT-174, US
23.252.162.0/24 Origin: 398968 GROUP-IID-01, US
23.252.162.0/24 Transit: 174 COGENT-174, US
23.252.163.0/24 Origin: 398968 GROUP-IID-01, US
23.252.163.0/24 Transit: 174 COGENT-174, US
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
/13:593 /14:1214 /15:2038 /16:13569 /17:8320 /18:13875
/19:25171 /20:43230 /21:51779 /22:108388 /23:94988 /24:520689
/25:790 /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 6718 TTNET, TR
12479 5777 6829 UNI2-AS, ES
8151 4195 10222 Uninet S.A. de C.V., MX
11492 3532 4597 CABLEONE, US
8551 3241 3776 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
6327 3159 3348 SHAW, CA
7155 3041 3951 VIASAT-SP-BACKBONE, US
22773 3002 4022 ASN-CXA-ALL-CCI-22773-RDC, US
39891 2807 3271 ALJAWWALSTC-AS, SA
30036 2263 2608 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 2:997 3:153 4:7 5:3701 6:101
7:5 8:1557 9:1 11:172 12:1705 13:407
14:2361 15:145 16:39 17:374 18:129 20:165
21:4 22:188 23:5398 24:2374 25:4 27:2585
29:19 31:2407 32:104 34:1 35:50 36:1733
37:3926 38:2459 39:737 40:149 41:3913 42:1067
43:2100 44:294 45:15969 46:3876 47:302 49:1635
50:1905 51:107 52:1345 54:293 55:733 56:8
57:55 58:1767 59:1138 60:953 61:2255 62:2418
63:1936 64:5366 65:2321 66:4927 67:2930 68:1182
69:4171 70:1346 71:677 72:3068 74:2628 75:1516
76:715 77:2170 78:3800 79:2882 80:1915 81:1654
82:1444 83:1196 84:1324 85:3587 86:708 87:1882
88:2617 89:3142 90:498 91:7528 92:1893 93:2595
94:3266 95:4493 96:1313 97:344 98:991 99:863
100:75 101:1049 102:1865 103:27974 104:4113 105:459
106:841 107:2431 108:747 109:4164 110:2053 111:3179
112:1956 113:1533 114:1531 115:1944 116:1890 117:2499
118:2320 119:1850 120:1661 121:1029 122:2530 123:2114
124:1615 125:2062 128:1362 129:1150 130:916 131:2085
132:758 133:367 134:1927 135:285 136:849 137:862
138:2469 139:1220 140:868 141:1334 142:1247 143:1424
144:1229 145:336 146:1751 147:1466 148:2210 149:1653
150:856 151:1080 152:1785 153:446 154:3678 155:1360
156:1864 157:1209 158:998 159:2002 160:2386 161:1260
162:3420 163:1185 164:1663 165:1530 166:624 167:1678
168:3674 169:687 170:4310 171:824 172:2956 173:3048
174:1015 175:1124 176:3460 177:4574 178:3022 179:2001
180:2286 181:2848 182:3215 183:1926 184:2416 185:19184
186:4267 187:3508 188:3764 189:3101 190:8857 191:1331
192:10990 193:8478 194:6941 195:4978 196:2909 197:2381
198:5971 199:5992 200:7465 201:5655 202:10465 203:10015
204:4521 205:3379 206:3841 207:3377 208:3995 209:4592
210:4229 211:2449 212:3913 213:3375 214:1160 215:64
216:6386 217:2627 218:1226 219:607 220:1958 221:983
222:860 223:2153
End of report
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