[REN-BGP-stats] Weekly Global IPv4 R&E Routing Table Report
REN Routing Table Report
cscora at bgp.nsrc.org
Sat Apr 13 22:00:46 UTC 2024
This is an automated weekly mailing describing the state of the IPv4
Research & Education Routing Table received by NSRC's collector
from Internet2's network.
Daily listings are sent to ren-bgp-stats-all at lists.nsrc.org.
For historical data, please see https://bgp.nsrc.org.
If you have any comments please contact Philip Smith <philip at nsrc.org>.
IPv4 R&E Routing Table Report 22:00 GMT Sat 13 Apr, 2024
IPv4 BGP Table (R&E) as seen at Internet2.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/Internet2/
Analysis Summary
----------------
BGP routing table entries examined: 23282
Prefixes after maximum aggregation (per Origin AS): 13025
Deaggregation factor: 1.79
Unique aggregates announced (without unneeded subnets): 15141
Number of IPv4 prefixes with a valid ROA: 10030
Number of IPv4 prefixes with an invalid ROA: 20
Number of IPv4 prefixes with no ROA: 13232
Total ASes present in the Internet Routing Table: 2768
Prefixes per ASN: 8.41
Origin-only ASes present in the Internet Routing Table: 2393
Origin ASes announcing only one prefix: 1057
Transit ASes present in the Internet Routing Table: 375
Transit-only ASes present in the Internet Routing Table: 70
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 3.3
Max AS path length visible: 16
Max AS path prepend of ASN ( 47805) 11
Prefixes from unregistered ASNs in the Routing Table: 13
Number of instances of unregistered ASNs: 13
Number of 32-bit ASNs allocated by the RIRs: 44118
Number of 32-bit ASNs visible in the Routing Table: 653
Prefixes from 32-bit ASNs in the Routing Table: 1804
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 7
Number of addresses announced to Internet: 236732736
Equivalent to 14 /8s, 28 /16s and 65 /24s
Percentage of available address space announced: 6.4
Percentage of allocated address space announced: 6.4
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: 2975
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4618
Total APNIC prefixes after maximum aggregation: 2267
APNIC Deaggregation factor: 2.04
Prefixes being announced from the APNIC address blocks: 4709
Unique aggregates announced from the APNIC address blocks: 2667
APNIC Region origin ASes present in the Internet Routing Table: 547
APNIC Prefixes per ASN: 8.61
APNIC Region origin ASes announcing only one prefix: 232
APNIC Region transit ASes present in the Internet Routing Table: 59
Average APNIC Region AS path length visible: 3.8
Max APNIC Region AS path length visible: 16
Number of APNIC region 32-bit ASNs visible in the Routing Table: 208
Number of APNIC addresses announced to Internet: 45583424
Equivalent to 2 /8s, 183 /16s and 140 /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, 131072-153913
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: 12832
Total ARIN prefixes after maximum aggregation: 7150
ARIN Deaggregation factor: 1.79
Prefixes being announced from the ARIN address blocks: 12590
Unique aggregates announced from the ARIN address blocks: 8369
ARIN Region origin ASes present in the Internet Routing Table: 1259
ARIN Prefixes per ASN: 10.00
ARIN Region origin ASes announcing only one prefix: 435
ARIN Region transit ASes present in the Internet Routing Table: 158
Average ARIN Region AS path length visible: 2.9
Max ARIN Region AS path length visible: 13
Number of ARIN region 32-bit ASNs visible in the Routing Table: 201
Number of ARIN addresses announced to Internet: 126662400
Equivalent to 7 /8s, 140 /16s and 183 /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, 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: 3617
Total RIPE prefixes after maximum aggregation: 2874
RIPE Deaggregation factor: 1.26
Prefixes being announced from the RIPE address blocks: 3768
Unique aggregates announced from the RIPE address blocks: 3126
RIPE Region origin ASes present in the Internet Routing Table: 679
RIPE Prefixes per ASN: 5.55
RIPE Region origin ASes announcing only one prefix: 305
RIPE Region transit ASes present in the Internet Routing Table: 104
Average RIPE Region AS path length visible: 3.6
Max RIPE Region AS path length visible: 15
Number of RIPE region 32-bit ASNs visible in the Routing Table: 152
Number of RIPE addresses announced to Internet: 57672576
Equivalent to 3 /8s, 112 /16s and 3 /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,
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: 1395
Total LACNIC prefixes after maximum aggregation: 555
LACNIC Deaggregation factor: 2.51
Prefixes being announced from the LACNIC address blocks: 1400
Unique aggregates announced from the LACNIC address blocks: 755
LACNIC Region origin ASes present in the Internet Routing Table: 161
LACNIC Prefixes per ASN: 8.70
LACNIC Region origin ASes announcing only one prefix: 57
LACNIC Region transit ASes present in the Internet Routing Table: 25
Average LACNIC Region AS path length visible: 4.2
Max LACNIC Region AS path length visible: 11
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 65
Number of LACNIC addresses announced to Internet: 4311680
Equivalent to 0 /8s, 65 /16s and 202 /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: 807
Total AfriNIC prefixes after maximum aggregation: 168
AfriNIC Deaggregation factor: 4.80
Prefixes being announced from the AfriNIC address blocks: 808
Unique aggregates announced from the AfriNIC address blocks: 217
AfriNIC Region origin ASes present in the Internet Routing Table: 49
AfriNIC Prefixes per ASN: 16.49
AfriNIC Region origin ASes announcing only one prefix: 28
AfriNIC Region transit ASes present in the Internet Routing Table: 8
Average AfriNIC Region AS path length visible: 2.9
Max AfriNIC Region AS path length visible: 11
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 27
Number of AfriNIC addresses announced to Internet: 2499328
Equivalent to 0 /8s, 38 /16s and 35 /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
2907 595 2160 464 SINET-AS Research Organization of Infor
7497 442 180 24 CSTNET-AS-AP Computer Network Informati
1237 191 74 142 KREONET-AS-KR KISTI, KR
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
7575 172 329 115 AARNET-AS-AP Australian Academic and Re
55824 130 19 19 NKN-CORE-NW NKN Core Network, IN
4538 129 4192 72 ERX-CERNET-BKB China Education and Rese
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, T
4621 70 37 10 UNINET-AS-AP UNINET-, TH
9411 66 16 2 NONTRINET-AS-AP Kasetsart University, T
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
16509 3611 3939 1667 AMAZON-02, US
14618 894 4164 675 AMAZON-AES, US
668 203 648 172 DNIC-AS-00668, US
376 201 162 151 RISQ-AS, CA
5786 197 16 1 UPRENET, PR
2920 174 34 7 LACOE, US
2152 151 507 94 CSUNET-NW, US
18558 140 18 4 NETBLK-RCOEK, US
81 127 521 30 NCREN, US
1 126 2 47 LVLT-1, US
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 284 1899 250 DFN Verein zur Foerderung eines Deutsch
786 186 1767 183 JANET Jisc Services Limited, GB
8895 161 24 5 ISU Internet Services Unit ISU, SA
559 114 533 104 SWITCH Peering requests: peering at switch
1103 95 1503 83 SURFNET-NL SURFnet, The Netherlands, NL
2614 93 27 73 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnol
553 78 462 78 BELWUE BelWue-Koordination, DE
3267 76 32 68 RUNNET, RU
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 158 176 43 Rede Nacional de Ensino e Pesquisa, BR
28391 152 10 66 Universidad Juarez Autonoma de Tabasco,
11340 108 25 51 Red Universitaria Nacional, CL
271640 68 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
4270 49 16 2 Red de Interconexion Universitaria, AR
19611 48 17 2 Associacao Antonio Vieira - Unisinos, B
2715 45 99 34 Fundacao Carlos Chagas Filho de Amparo
61468 43 3 14 CEDIA, EC
28614 38 2 2 Fundacao Universidade Regional de Blume
3596 36 4 3 Universidad Autonoma Metropolitana, MX
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2018 379 319 71 TENET-1, ZA
36914 199 82 3 KENET-AS, KE
8094 47 48 18 PUKNET, ZA
327700 46 16 1 MoRENet, MZ
6879 24 2 9 ENSTINET-, EG
37074 12 8 2 UG-AS, GH
37501 11 49 6 UOFS, ZA
37654 11 1 6 RwEdNet-AS, RW
37215 9 8 1 MAREN, MW
36982 8 33 8 UCT, ZA
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
16509 3611 3939 1667 AMAZON-02, US
14618 894 4164 675 AMAZON-AES, US
2907 595 2160 464 SINET-AS Research Organization of Infor
7497 442 180 24 CSTNET-AS-AP Computer Network Informati
2018 379 319 71 TENET-1, ZA
680 284 1899 250 DFN Verein zur Foerderung eines Deutsch
668 203 648 172 DNIC-AS-00668, US
376 201 162 151 RISQ-AS, CA
36914 199 82 3 KENET-AS, KE
5786 197 16 1 UPRENET, PR
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
7497 442 418 CSTNET-AS-AP Computer Network Information Cente
2018 379 308 TENET-1, ZA
14618 894 219 AMAZON-AES, US
36914 199 196 KENET-AS, KE
5786 197 196 UPRENET, PR
58647 182 180 KAGAWAU-AS Kagawa University, JP
2920 174 167 LACOE, US
8895 161 156 ISU Internet Services Unit ISU, SA
18558 140 136 NETBLK-RCOEK, US
2907 595 131 SINET-AS Research Organization of Information a
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, US
18838 UNALLOCATED 168.8.240.0/20 3480 PEACHNET-AS3480, US
18838 UNALLOCATED 168.9.0.0/20 3480 PEACHNET-AS3480, US
11570 UNALLOCATED 192.94.216.0/24 40498 ABQG, US
11570 UNALLOCATED 192.207.226.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.106.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.107.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.108.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.188.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.189.0/24 40498 ABQG, US
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
45.42.252.0/22 Origin: 16509 AMAZON-02, US
45.42.252.0/22 Transit: 11537 INTERNET2-RESEARCH-EDU, US
64.186.3.0/24 Origin: 16509 AMAZON-02, US
64.186.3.0/24 Transit: 11537 INTERNET2-RESEARCH-EDU, US
170.39.88.0/24 Origin: 14618 AMAZON-AES, US
170.39.88.0/24 Transit: 16509 AMAZON-02, US
173.249.168.0/22 Origin: 16509 AMAZON-02, US
173.249.168.0/22 Transit: 11537 INTERNET2-RESEARCH-EDU, US
192.31.196.0/24 Origin: 112 RESERVED, ZZ
192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL
Complete listing at https://bgp.nsrc.org/REN/Internet2/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 /8:0 /9:1 /10:1 /11:2 /12:16
/13:26 /14:58 /15:174 /16:2079 /17:482 /18:486
/19:619 /20:1001 /21:1052 /22:1743 /23:1804 /24:13408
/25:76 /26:49 /27:132 /28:8 /29:60 /30:0
/31:0 /32:5
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
16509 574 3611 AMAZON-02, US
14618 294 894 AMAZON-AES, US
36914 186 199 KENET-AS, KE
8895 156 161 ISU Internet Services Unit ISU, SA
32440 87 119 LONI, US
23024 51 108 OCDE, US
1 43 126 LVLT-1, US
327700 40 46 MoRENet, MZ
3267 37 76 RUNNET, RU
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:3 3:121 4:2 5:20 6:4 8:2
12:1 13:59 14:90 15:100 16:116 18:118
23:46 24:3 31:1 34:3 35:17 38:9
40:6 41:118 42:10 44:8 45:61 46:11
47:1 49:9 50:9 52:833 54:178 58:1
59:19 60:6 61:3 62:9 63:38 64:151
65:13 66:90 67:68 68:23 69:53 70:27
71:16 72:16 74:78 75:1 76:49 77:13
78:3 79:10 80:12 81:25 82:7 83:7
84:13 85:33 86:4 87:2 88:1 89:19
91:57 92:2 93:4 94:2 95:2 96:7
97:1 98:13 99:67 101:2 102:10 103:310
104:127 107:2 108:35 109:9 111:16 114:24
115:1 116:12 117:62 118:33 119:20 121:27
122:11 123:8 124:42 125:5 128:84 129:44
130:141 131:70 132:59 133:157 134:113 135:2
136:215 137:66 138:62 139:19 140:46 141:7
142:45 143:31 144:40 145:3 146:136 147:70
148:204 149:18 150:45 151:30 152:137 153:14
154:31 155:85 156:138 157:33 158:45 159:165
160:37 161:34 162:70 163:88 164:26 165:71
166:2 167:20 168:172 169:10 170:181 171:1
172:15 173:29 174:2 175:18 176:12 177:6
178:1 179:14 180:15 181:1 182:1 184:3
185:85 186:3 187:18 188:15 189:3 190:17
191:13 192:1567 193:286 194:130 195:69 196:151
197:116 198:506 199:333 200:261 201:37 202:632
203:423 204:381 205:164 206:207 207:197 208:125
209:156 210:190 211:14 212:162 213:18 214:8
216:185 217:12 218:22 219:5 220:17 222:2
223:14
End of report
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