IPv4 R&E Routing Table Report 23:05 GMT Tue 16 Dec, 2025 IPv4 BGP Table (Global) as seen at Singapore. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Singapore/ Analysis Summary ---------------- BGP routing table entries examined: 1018453 Prefixes after maximum aggregation (per Origin AS): 393677 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505066 Number of IPv4 prefixes with a valid ROA: 604587 Number of IPv4 prefixes with an invalid ROA: 618 Number of IPv4 prefixes with no ROA: 413248 Total ASes present in the Internet Routing Table: 77582 Prefixes per ASN: 13.13 Origin-only ASes present in the Internet Routing Table: 66486 Origin ASes announcing only one prefix: 27115 Transit ASes present in the Internet Routing Table: 11096 Transit-only ASes present in the Internet Routing Table: 556 Paths with bogon ASNs present in the IPv4 Routing Table: 18 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 999 Number of instances of unregistered ASNs: 1028 Number of 32-bit ASNs allocated by the RIRs: 48220 Number of 32-bit ASNs visible in the Routing Table: 39471 Prefixes from 32-bit ASNs in the Routing Table: 219207 Number of bogon 32-bit ASNs visible in the Routing Table: 72 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 739 Number of addresses announced to Internet: 3104515328 Equivalent to 185 /8s, 11 /16s and 37 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 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: 332422 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 276015 Total APNIC prefixes after maximum aggregation: 80709 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 262967 Unique aggregates announced from the APNIC address blocks: 106190 APNIC Region origin ASes present in the Internet Routing Table: 14899 APNIC Prefixes per ASN: 17.65 APNIC Region origin ASes announcing only one prefix: 4542 APNIC Region transit ASes present in the Internet Routing Table: 2002 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10486 Number of APNIC addresses announced to Internet: 752986368 Equivalent to 44 /8s, 225 /16s and 169 /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, 131072-155961 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: 297810 Total ARIN prefixes after maximum aggregation: 134618 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 298219 Unique aggregates announced from the ARIN address blocks: 145874 ARIN Region origin ASes present in the Internet Routing Table: 19366 ARIN Prefixes per ASN: 15.40 ARIN Region origin ASes announcing only one prefix: 7087 ARIN Region transit ASes present in the Internet Routing Table: 1924 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5425 Number of ARIN addresses announced to Internet: 1342437120 Equivalent to 80 /8s, 3 /16s and 247 /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, 393216-402332 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, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 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: 282160 Total RIPE prefixes after maximum aggregation: 139912 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 282856 Unique aggregates announced from the RIPE address blocks: 183742 RIPE Region origin ASes present in the Internet Routing Table: 29112 RIPE Prefixes per ASN: 9.72 RIPE Region origin ASes announcing only one prefix: 12087 RIPE Region transit ASes present in the Internet Routing Table: 4056 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12867 Number of RIPE addresses announced to Internet: 735107840 Equivalent to 43 /8s, 208 /16s and 219 /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 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 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: 125581 Total LACNIC prefixes after maximum aggregation: 30817 LACNIC Deaggregation factor: 4.08 Prefixes being announced from the LACNIC address blocks: 121387 Unique aggregates announced from the LACNIC address blocks: 49733 LACNIC Region origin ASes present in the Internet Routing Table: 11325 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2667 LACNIC Region transit ASes present in the Internet Routing Table: 2538 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9331 Number of LACNIC addresses announced to Internet: 170482944 Equivalent to 10 /8s, 41 /16s and 93 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 35888 Total AfriNIC prefixes after maximum aggregation: 6951 AfriNIC Deaggregation factor: 5.16 Prefixes being announced from the AfriNIC address blocks: 52285 Unique aggregates announced from the AfriNIC address blocks: 18926 AfriNIC Region origin ASes present in the Internet Routing Table: 1997 AfriNIC Prefixes per ASN: 26.18 AfriNIC Region origin ASes announcing only one prefix: 732 AfriNIC Region transit ASes present in the Internet Routing Table: 383 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1362 Number of AfriNIC addresses announced to Internet: 103138304 Equivalent to 6 /8s, 37 /16s and 196 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 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 13305 8729 118 CHINAMOBILE-CN China Mobile Communication 7545 6039 834 582 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4611 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4533 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4013 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3362 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3322 1869 99 VNPT-AS-VN VNPT Corp, VN 24560 2954 865 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2699 169 595 LCS-AS-AP LARUS Limited, HK Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 13956 38439 5434 AMAZON-02, US 22773 4767 3099 366 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 945 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3318 4863 492 GOOGLE-CLOUD-PLATFORM, US 749 3207 54744 2458 DNIC-AS-00749, US 16625 2854 1222 2141 AKAMAI-AS, US 36352 2817 229 903 AS-COLOCROSSING, US 174 2726 8769 863 COGENT-174, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7296 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3938 368 2254 M247, RO 20940 3848 3394 121 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2560 182 1861 CDNEXT, GB 34984 2419 363 573 TELLCOM-AS, TR 8452 1687 1852 14 TE-AS TE-AS, EG 203020 1617 242 783 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12675 3283 587 UNINET, MX 10620 3433 457 1108 Telmex Colombia S.A., CO 13999 2514 509 352 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1376 2432 266 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1263 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1024 2486 56 TIM SA, BR 18881 907 1127 31 TELEFONICA BRASIL S.A, BR Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1927 368 14 RAYA-AS, EG 36992 1692 1509 402 ETISALAT-MISR, EG 24863 1262 389 16 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1084 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1048 520 31 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 557 82 3 KENET-AS, KE 15399 548 56 55 WANANCHI-, KE Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 13956 38439 5434 AMAZON-02, US 9808 13305 8729 118 CHINAMOBILE-CN China Mobile Communication 8151 12675 3283 587 UNINET, MX 12479 7296 1711 149 UNI2-AS, ES 7545 6039 834 582 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4767 3099 366 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 945 CABLEONE, US 9498 4611 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4533 347 24 FPT-AS-AP FPT Telecom Company, VN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13305 13187 CHINAMOBILE-CN China Mobile Communications Grou 8151 12675 12088 UNINET, MX 12479 7296 7147 UNI2-AS, ES 7545 6039 5457 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4533 4509 FPT-AS-AP FPT Telecom Company, VN 22773 4767 4401 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4611 4272 BBIL-AP BHARTI Airtel Ltd., IN 7552 4013 3985 VIETEL-AS-AP Viettel Group, VN 7155 3861 3776 VIASAT-SP-BACKBONE, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 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 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 174 COGENT-174, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 5511 OPENTRANSIT, FR 23.140.180.0/24 Origin: 401371 DEEP-TO-ONE-INC, US 23.140.180.0/24 Transit: 154309 INTELLIGENT1-AS-AP Intelligent Cloud Lim 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US Complete listing at https://bgp.nsrc.org/REN/Singapore/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 /9:14 /10:41 /11:93 /12:299 /13:578 /14:1197 /15:2092 /16:13641 /17:8151 /18:13418 /19:24652 /20:44618 /21:51969 /22:112709 /23:105191 /24:639774 /25:0 /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 8151 6876 12675 UNINET, MX 12479 6226 7296 UNI2-AS, ES 11492 3533 4688 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3046 4767 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2443 13956 AMAZON-02, US 30036 2318 2661 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3433 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2441 2:1531 3:968 4:10 5:4965 6:187 7:6 8:1500 9:6 11:172 12:1230 13:587 14:2613 15:415 16:290 17:387 18:910 20:586 21:4 22:188 23:8068 24:2560 25:2 27:2798 29:19 31:3387 32:31 33:1 34:84 35:287 36:4612 37:4529 38:9997 39:1200 40:440 41:4445 42:2062 43:2890 44:411 45:19618 46:5082 47:392 49:2159 50:2050 51:593 52:1325 54:226 55:1119 56:11 57:300 58:2319 59:1345 60:1171 61:3086 62:3099 63:1737 64:5982 65:2117 66:5859 67:3230 68:1494 69:4178 70:1020 71:617 72:3069 74:2920 75:1516 76:595 77:2755 78:1925 79:1793 80:2305 81:2076 82:3872 83:1469 84:2012 85:3645 86:1106 87:2189 88:1357 89:4603 90:835 91:8409 92:2831 93:3006 94:4204 95:4562 96:1430 97:311 98:949 99:783 100:68 101:1343 102:4303 103:32635 104:5482 105:757 106:918 107:2807 108:1208 109:4251 110:2309 111:3948 112:2804 113:1936 114:2099 115:2270 116:2176 117:3141 118:3001 119:2084 120:2406 121:1497 122:2946 123:2276 124:1647 125:2935 126:125 128:1580 129:947 130:1525 131:2259 132:763 133:462 134:1628 135:538 136:1502 137:1221 138:3002 139:1593 140:1768 141:1555 142:2426 143:2114 144:1348 145:629 146:2182 147:2138 148:2791 149:2936 150:1322 151:2591 152:2244 153:796 154:9281 155:2275 156:4486 157:2241 158:1470 159:2720 160:3669 161:1998 162:3976 163:2330 164:1979 165:2629 166:1305 167:2189 168:3924 169:810 170:5443 171:1115 172:4519 173:3424 174:902 175:1349 176:3766 177:4733 178:4278 179:2290 180:2966 181:4338 182:3846 183:2661 184:2037 185:21634 186:5446 187:4772 188:4453 189:4490 190:9663 191:1500 192:11417 193:9497 194:7849 195:5618 196:3268 197:3265 198:6064 199:6101 200:8062 201:6401 202:10513 203:10489 204:4618 205:3688 206:4369 207:3791 208:4316 209:5456 210:4726 211:2681 212:4891 213:4017 214:1065 215:54 216:7070 217:3388 218:1601 219:407 220:2191 221:1285 222:773 223:3229 End of report